| 摘要 |
PURPOSE:To firmly accumulate the working time of a equipment which operates intermittently by controlling interruption to a computer with the use of rising and lowering of an operation signal and a working signal which become high level while operating the equipment. CONSTITUTION:In case when dust incineration systems are operated, a digital signal DI becomes high level and at the same time a rising signal R and a lowering signal F of a signal DI are started to interrupt. When the signals are finished, interruption to the computer which controls other systems is started. The working time of dust incineration systems can be counted by counting of a clock while interrupting. While the signal DI provides high level if a computer releases the interruption to control other systems and after the processing is finished and when interruption is started again, if the signal DI provides continuously high level, this signal DI becomes a starting signal for interruption after the signal DI is started. Therefore, misjudgement to set the signal F as the starting signal for interruption can not be generated and the accumulation of working time of an equipment which works intermittently can firmly be performed. |
